Mechanical shovel



S. HOAR.

CHANICAL sHovEL,

APPLICAUON FILED JAN.

Patented Nov. 25, 1919.

2 SHEETS-SHEET 2.

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SAMUEL HOM, 03F VIRGINIA, EYVNNESGTA.

MECHANICAL SHVEL.

Specification of Letters Tatent. Patented Nov. 25, 1919,

Application led January 14, 1919. Serial No. 271,056.

State of Minnesota, have invented certain new and useful inprovements in Mechanical Shovels, of whiclrthe following is a specification, reference being had therein to the accompanying drawing.

This invention relates to mechanical shovels and the embodiment here illustrated and described is especially designed for tunneling purposes where room for operating' the device may be considerably restricted such as experienced in coal, iron or other mines and for which purpose my present invention includes a convertible combination of shoreline, means.

lt is evident that.' this or a slightly modil form may beused with equally good ts where open shoveling is required and such machines employed.

rlhe principal object of the invention is to provide a more practical mechanical shovel `than heretofore known and one requiring little space possible in which to operate.

Another object. is to provide convenient convertible means in the event of exceptional conditions arising preventing the turningr around of the shovel while working and whereby material being shoveled maybe passed directly over the machine longitudinally thereof.

Still other objects and advantagesof the novel combination of parts will appear in the further'description of the' invention.

ln the acconipan-ving drawings forming part of this application. and in which like reference clnlracters represent like parts Figure 1 is a side elevation of one embodiment of my invention,

fig. Z is a front elevation of Fig. 1 eX- ceplt that a modified form of shovel and mounting therefor is illustrated.

Fig, 3 is a side elevation partly in section of Fig'. 2,

Fig; t is a top plan View of Fig. 2, and

Fig. 5 is a transverse sectional view on the 1 represents train .car mounted upon four wheels 2--2 and the latter or.

diameter than the former for the purpose of producing a forward downward incl1nation to the body of the car7 the particular object of which will appear later.

A turntable having cooperative interlockingl parts 4 and 5 is mounted upon the i car body and supports the adjustable superstructure indicated at 6, the floor of which is completely covered over with a suitable deck`7.

The superstructure 6 may be of any desired form of fabrication to provide the necessary strong support for the operating parts of the machine.

l have shown the upright ends of the superstructure as being composed of angle bars 8-8 at the rear end and 9-9 at the forward end, each pair being tied together and strengthened by suitable end plates, 10 at the rear and 11 at the front end.

Upon the upper extremities of these angle bars is supported the shovel carriage track.

ln the lstructure shown in Fig. 1, each rail of this track comprises an upright web 12 which is firmly attached to the upper ends of the angles 8 and 9 and forms the inner wall of the rail. Longitudinally of the outer lower edge of the web 12 is secui-ely riveted the angle bar 13 which forms the rail proper and upon which the Wheels of the reciprocable shovel carriage rest. To the upper outer edge of the web is fastened ar bar 14 similar to the bar 13 eX- cept that it is square in cross section, and

which acts as a guide to the wheelsl of the.

shovel carriage to prevent them being raised from the bar 13 and becoming dislodged, the construction of the two rails lleing identical.

The spacing of the rails apart is, approiiimately one half the width of the superf' structure uponwhich they are mounted, this being found to result in a Well balanced and proportioned machine for the purpose intendel- A y I The front supporting bars 9 areA considerably shorter than thevrear bars 8 for the purpose of producing' an inclination toward the forward end of the track, such inclination beingr downward.

. 15 represents the shovel carriage which has a forwardly extending upper portion 10E 16 uponV which is pivotally mounted the' i i The .carriage vends 25, are drawn *no trated is a Dake steam on i which Apasses riage, and of. w ic Y vf-there arestwo' on each 1o side thereoigoperV intermediate of the ,bars 13 vand?.1.4; -vv'l1iloe the wheels`23 of which there is butone upon lriage are outside ofptige side frame. of the 4- icarr'mgeqpd.@plysupport the latter as aux-v d the Wheels `2$fmay project vbeyond the 'forw-ard-end`o'the rails. 1'11- I The dipper ann or stick, as it is frequently called, is composed ofitwofsuitably shaped y2,0 channel b ars attached atl one end to either 24- and attheir opposite toward eachother and have 'fixed thereloetwecn,v by suitable bolts 25', 'the extension 27. `To thy free end of this lside of the dipper over thesheave- 29 Von from 4thai:Winding drum '31,l which latter is yoperated in any desired manner byfa suitable ,l motor 32. In this instance,.the motor illusmotor.

A- single line onlyis required or'oper- A ating the di'pper asthe material en aging heavier than the andle to its Work by end is at all times end and Will naturally go 4 gravity.

" A. `second Dake motor is installed Within the machine and operates, by means of a suitable-Worm drive indicated at 35, the

40 Winding drum 36. Upon thisdrum is mounted the carriage operating cable 37, one end of about the sheave 38 on the thence to the under .side of the .,{shat 30 and f'deck plate 19 it is\secured in any desired manner. The opposite end ofthe cable 3T passes over the shcave 39jmounted on `the l shaft 40 at 'the opposite end of the machinefto that in which the shaftyfSO iscarried, and thence to the under side' of the deck 19 of the shovel carri-age. By this means the carriage 'is reciprocated longitudinally its'track at the will of the operator vvho has control ofthe eni fgine 34, it being well known that these en'-' gines, as Well as many other makes, are 4readily reversible by the manipulation of a single lever control.

'I have found b' experience that a Worm driven Winding rum ofthis character is a shovel supportin 'an inclined tracky ctly thereabove.

It will be readily understood that a car.

mage' thus mounted will constantly seek-the es lower and of theftract and the use. of the each side of the can attention'.V by there by which of thel device is accoiupl IIneke the .superstructure o Wheels. Whenthe shovel is fully ad-l i shovel is swung around 'for 25 extension is attached the Aoperating" line the ,shaft 30 compressed air lof `the dipper carriage-Where- Another I advantageous liemrnndiivhids'the necessity ci vconstant perwr in prcventing .rnmovementgf the carriage e 'movement ofthe carriage is aise V'absol-utely positive with suli driving"`mechanisn 7c A third Dake engine or'inotor 41 isfmounted on the machine, is connected to and operates the verticaly shat 42 carry' a spur gear 43 at its lower endw'hichmes es with i" the ring gear 44 fixed to t4 e tram'car l and at.

the rotation of the superstructure ished. found necessary to the machine as .low as possible to provide sufficient head so -rooi`n for operating the shovel and this at times,'results in interference with loading the higher ytypes of tram cars when the such purpose, its

`elevation being limited to a position in es which the shovel and vhandle are substantially parallel with the tram track. l r

At 'such times, is when the combinationof the inclined carriage track on the rotatable superstructureand 'in the'necessaji'y means for elevating the loaded shovelA sufficiently for practical purposes' when turned-*about over the hightnani oai',' 'as the shovel will thus be automatically elevated. I as?,

'feature of@ this combination, and one experienced in hoth forms of shovel mountings here illustrated, is that the angle of the ground engaging li .of thev shovel becomes exceptionally We adapted to digging somewhat helovir the level of the track bed, which results in great convenience vand etliciency.

ln the modiied form yof carriage mounting and shovel as illustrated inv Figs. 2, 3 lob and 4, the tram car, superstructure, arrange? ment of motors and operating parts are identical to those showin in Fig. l and nieuwedescribed, the latter being that form o ma In some instances it is icc .- chine better adapted for 'common use. But 11o exceptionally efficient in combination with carriage mounted upon @he modified form of shovel-*and mount' is providedfor special; tunnel work, an orm an auxiliary part of the general purpose machine. 'y In this form, the shovelcarria'ge track is -o the Asame general. form of fabrication as that shown in 1 and 5 except that the r -Wheel engaging portions are facing inwardly toward each other instead of outwai-diy, that is to say, the Wheel uiding bars 45 and 46'are on the inside of t e Webs i7 Iand the, entire shovel carriage operates" intermediate of the Webs of the track. The traction wheels of the carriage are illustrated at 49 and 50.

' The track in this instance is formed with a hump 51 therein instead oi being a continuous incline as inthe formerly described machine, the rear wheel portion .thereof he ingags'arcximately length nii-the nfnsei is@ ias clined tram car aord 9o base of the carriage, but practically ,the saine degree of inclination as the vforward portion.l

.By this construction of track, the carriage, when `drawn rearwardly, yvill assume the position shown in'dotted lines Fig. 3 with the forward end tilted up considerably higher than the opposite end and this 0ccurs just at the time of termination of the rearward travel of the carriage and when the load of the shovel is to be discharged.

vThe shovel and handle are made the same width and approximate depth throughout,

`thus combining to form a chute through 15' which the material is discharged in the accompanying cars to be loaded at the lrear of the machine. The discharge of the shovel occurs when the carriage is brought to a sudden termination of its rearward stroke and the free end ofthe handle extends over the car being loaded. I

The shovel is pivotally mounted on the transverse` shaft 52 suitably journaled in the forward end of the carriage and has rigidly fixed thereto the arms 53 which form the support therefor.

The forward or material engaging end 54 of the shovel is of the saine general forni as that shown in Fig. 1 and may or may not be provided 'with an operative closure as ,shown in Fig. l and common to such shovels. 'The opposite end of the, chute-like's'hovel handle is open at all times and the operating rope is attached and controlled identically with that illustrated in Fig. 1. The

carriage control Vis also identical to that previously described except that the end of they line attached to the rear end of the carriage r .passes over aA suitably installed f .guidingy -roller illustrated at 58.

From the above it is apparent that' the changing from one machine toV the other necessitates only the adjustment of the cable connections and the attachment of the carriage track tothe upper ends of the angle bars 8 8|and 9 9.

n Fig. 2 is`illus rated a suitable seat 55 resting upon a laterallyA projecting narrow platform 56, for the convenience of the opeifator. In 'front of thisseat are mounted m any desired manner the three levers 57 by which the motors are controlled.

Having thus described my invention, v

fr.; es

what claim as new and desire to secure by l. In a mechanical shovel, the combina tion with a trani car mounted upon wheels greater in diameter in the reary thereof than in the front and having a turn table there upon, of a rotatable superstructure supported upon the car, an inclined track cars ried by the superstructure and extending from one end thereof to the other .and a shovel reciprocab-ly carried on thetrack.

2. ln a mechanical shovel, the cikilaina. vtion with a normally inclined train ca;l "of the character described, of a rotatable sun perstructure upon the car having a track of greater inclination than that of the car body thereupon andextending Jfrom one end thereof to the other and a shovel reciprocally carried upon the inclined track.

3. The combination with a tram car having a rotatable superstructure thereupon and an inclined track in the upper portion of the superstructure extending from one end thereof to the other, oif a carriage reciprocably mounted upon the track, a traneverse shaft in the forward end of the careratively carried by the carriage, means Jfor pivotally operating'the shovel and means for reciprocally operating the carriage whereby the contents of the shovel may be discharged over the superstructure and at the opposite end thereof to that at 'which it was shoveled. p'

In testimony whereof hereunto ath: signature in the presence of two witnesses.

v SAMUEL H0153..

Witnesses: j

W. H. DENHAM, S., Goo. STEVENS.

Sti 

